;;;; symbols.test --- test suite for Guile's symbols    -*- scheme -*-
;;;;
;;;; Copyright (C) 2001 Free Software Foundation, Inc.
;;;; 
;;;; This program is free software; you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation; either version 2, or (at your option)
;;;; any later version.
;;;; 
;;;; This program is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;;; GNU General Public License for more details.
;;;; 
;;;; You should have received a copy of the GNU General Public License
;;;; along with this software; see the file COPYING.  If not, write to
;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
;;;; Boston, MA 02111-1307 USA

(use-modules (ice-9 documentation))


;;;
;;; miscellaneous
;;;

;; FIXME:  As soon as guile supports immutable strings, this has to be
;; replaced with the appropriate error type and message.
(define exception:immutable-string
  (cons 'some-error-type "^trying to modify an immutable string"))

(define (documented? object)
  (not (not (object-documentation object))))


;;;
;;; symbol?
;;;

(with-test-prefix "symbol?"

  (pass-if "documented?"
    (documented? symbol?))

  (pass-if "string"
    (not (symbol? "foo")))

  (pass-if "symbol"
    (symbol? 'foo)))


;;;
;;; symbol->string
;;;

(with-test-prefix "symbol->string"

  (expect-fail-exception "result is an immutable string"
    exception:immutable-string
    (string-set! (symbol->string 'abc) 1 #\space)))


;;;
;;; gensym
;;;

(with-test-prefix "gensym"

  (pass-if "documented?"
    (documented? gensym))

  (pass-if "produces a symbol"
    (symbol? (gensym)))

  (pass-if "produces a fresh symbol"
    (not (eq? (gensym) (gensym))))

  (pass-if "accepts a string prefix"
    (symbol? (gensym "foo")))

  (pass-if-exception "does not accept a symbol prefix"
    exception:wrong-type-arg
    (gensym 'foo))

  (pass-if "accepts long prefices"
    (symbol? (gensym (make-string 4000 #\!))))

  (pass-if "accepts embedded NULs"
    (> (string-length (symbol->string (gensym "foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0"))) 6)))

